Gas-fired radiator



.June 24, 1930.v G. c. cARUaH/Nl 1,765,759

*e* GAS FIRED RADIATOR Filed Junel5, 1938 GLEN c. CARNAHAN, "or cHmAGoQILLmois, y

' 0F cnoeeo, iLLrNos, A oonro'nfmon or L'LINoIs atented June 24, 19x30 I *l limitation med Jamie, 192s.V serial' Np. 235,125.

offerin connection with the. ordinary steaml or Water heating system. inWh-lchf the boiler-l is at a place remote from fthe radiator.. Radiators of the character tov Whichthe invention pertains are'ordinarily-gas fired, but other fuels may bey utilized fortheir opera tion.

Radiators of the character specified are ordinarily provided Witha more lor less inclosedr combustion lchamber beneathsthe bottom header, the individual loops being so' constructed that when they are assembled a combustion chamber'of desired length is provided. The space or spaces r.betvveen adjacent loops, is or are 'preferably closed about the' margins of thev chamber Vexcept acrossthe top Vor a portion ofj the top which 'leaves an opening for the/products of combus'tion to pass from the'combustion chamf ber :proper upwardly.v betvveenvthe loopsl around the bottom header connection boss, if lsuch 'is provided, and from vthence upwardly along and between they one or more columns of adjacent loops. Sometimes .a flueis provided for carrying ofi1 the productsof combustion, as is illustrated in Daily Patent No.'1,580,651, dated'April 13, ,1926, but in other cases the products of combustion are' permitted free and unlimited lcon.

tac'tv'lith the various columns of each loop and then pass directly into the room or into an area immediately above the radiator.

The bottom header of such radiators provides a boiler and storage reservoir for ther Water Whichis turned into steam Vand passes upwardly through the several columns rof the loops and condenses on the Walls vthereofy or inthe top header 'andrreturns rto the bottom header Wherethe cycle-may be conltinued. lVhen the gases, and other products of combustion have free anddntimate contact With the entire area of the 'columns' and the top header, or a Ylarge portion of such area, condensationy of the steam Withinthe columns and the top header is mintion'rise, as is possible.

imizeld andthe heating eiiiciency materially 'asssivo'n To JAMES B.' oLoW a'sons,

lowered.` VThe reasons for this areobviousvn for the rising heatedgases and other :products of 'combustionv` maintain the columns and top header Walls at avhigh temperature and prevent cold air fromcontacting with they, condensing surfaces .to the extent` necessary for efficient. and desirable operation oftheradiator. I

v ne of the primary objects of theinveiition, therefore, is tov provide an arrange-Y-r Vment'Whereby'f the gases and other products offfcombustion rising from, the combustion chamber may be Ycarried tothe top of the l, l radiator with as little `Contact with the columns" and other condensing surfaces offea'ch loopl past VWnichpthe, products of combus-k Another object is, toprovi'de anfarrangement vvhi'chV Will induce a maximum contact of cold air with the condensing surfaces and thereby causey greater condensationv and` higher heating eiiiciency. In this connection arrangementl lis mader wherebyv proper draft from and `through the combustion chamber is maintained. f

Arnotherfobject is to provide a construction which may be cheaply andeconomically manufactured asan individual part of eachA loop casting/in which it isjdesired to incorporate y it, y theV .constructionV/being such vthat assembly, 'repair andV replacement are greatly facilitated.v

Still further objects, the uses, advantages yand functions ofthe invention and the preferred form illustrated Will be orshould be-y come readily appreciated after perusing the following description and claims, and after viewing the drawings, in which: y

Fig. l isa sidelelevationa-l view of the inner side of an end loop of ak gas fired radiator constructed in accordance Withthe invention, and y Fig. 2 is a transverse sectional view of lseveral interior. loops of a multiple loop` gas fired radiator looking downward toward the combustion p chamber. y n l The expressionsr radiator loop and a radiator unit which in-` itself', When loop, as used herein, are intendedto mean assembled with other units of thesame or V`similar character, may form a completel radiator, and these expressions Vare .further intendedtok include radiator units, that is,

loops having one,two, three, or more columns; In the drawing the end ioop'in Fi. l Vis O'eneiail7 desiOnatedQ andthe b e 5 n a intern'iediate loops in Fig'. 2Y are .designated 3,1each loop being an individual casting but` adapted tobe assembled with other loops to provide aradiatoiwth.any desired number yof loops. It should beY understood at the.

outset, however, that allof the loops ofthe assembled radiator/'need not be provided withV combustion chamber portions, for

Y, ksome ofthe loops may be of the usual and ordinary type while".theremainder are of Ithe gas orVV fuel fired type, as illustrated, "altliougliniy invention is useful only in connection with those floops against ory lpast .which the products'nofcombustion contact` and How. V `i `in .Ytheiiiusuaad embodiment of the in- 'ventionk each'loop isprovided with hollow top and bottonimlieaders 5 and 6, respectively, which 'are integrally joinedto and connected Y' Vby si-X columns designated 7. fThev end 4loops a2 maybe made substantially `identical with one; another exceptrrfor such` details as they gas andv water filling lconnections'etc., as will 'be understood, vrand a description Vof one vshould sutlice. Each end loopjon' its interior side,"that is, itsiside adapted to be adjacent Vanother loop, and each intermediate Vloop on both sides will, in the embodiment .of 1 the invention illustrated," beequippe'd with top 4k'and bott-oni header connection bosses 8 and 9 into'ivhich connecting nipples lit to jointhe Vfseveialj loopsv together in 'water and steam tight relation'to permitfcirculation of water.

andsteam from on'e'loop to another iii the radiator. .jj V` VOne or both end Vloops may be provided with acored out 'area 11 providing a combustion chamber, that is, portion of the combustion chamberfbeneath the bottom header.'V Thefouter side of thiscombustion chamber portion into which a portion of the gas or other burner may project isjpreferably closed by'an end plate 12 which may be `secured in position in any suitable inannei" and may aidV in supportingthe" burner in position. The intermediate loopsB are each likewise provided with six columns 13 ljoin-Y ing the top and bottom headers thereof and Vwith combustion chamber portions which,

when, theV several `loops y are assembled together with the chambered end loop or loops, together form complete combustion chamber within which the burner is located.

The end `loopsro'n one 'sideand the interpmediate"loopsVv onV 'both sides about the margins of the coiiibustion'chamber may be provided with fa vvrib 14E. These ribs do not extendVV entirely across the Y bottom lhea ders over the combustion chamber portions, but` terminate a. suthcient distance to one Aside or. f

`the other of the connection bosses 9 to pei'l mit the gases and other products of combus- 4, vion to flow upwardly between the ends and rthe bosses. A construction similar to this isl illustrated in Daily .'PatentNo. 1,681,173, dated August y21, 1928, entitled?y Radiator, and assigned tothe assignee of this applicar-y tion. These laterally projecting ribs on opposed sides of adjacentloops are arranged to abut against one another attheir external edges in any suitable mannerto more ,or less Y completely iiiclose the combustion` chamber between the adjacent portions of mating ribs and their transverseiy extending" bottoni portionsmay be cut away to provide proper inlets'for the admission of air to support combustion in thel combustionV chamber.;

-jp'refer to provide air inlet openings 15 s* from the combustion chamber .portions after the niannerdescribed and claimed in the said "Daily application. "The several loops are! Y provided with registering apertures y 16 z through which tie rods or bolts vpass and secure the several loops together.

f If the radiator be constructed as thus far described, the hot gases and other' products I 'of combustion will be free topass upwardly e through the' bottoms of the shells of tlieloops in conta ct with practicallylthe entire'radi'ating 'surface ofthe columns and top header,

and very .little `of such surface area will be .Y

useful for condensation with thev result that the heating efficiencyof the radiator isvery low. lThis constitutes aserious' problem which I havefoundmay be solved iftli'e gases and other' products of combustion -ris-A ing from the combustion chamber are confined to. a veryv small portion' of the totalV condensation area ofthe column or columns 'and top header. his is accomplished in Ythe forni of the invention illustrated by providing on one side of each endloop and on both sides Yof each intermediate loop "a These ribs, what Ivinay terni the'ue ribs, Vat their lower ends are spaced from and above thc' rib 14C to provide air vents indii cated by the arrows which mayy aid the draft upward through the Hue and tend to draw Vthe to is of the colu'niiisf Thusgase's and other roducts of comliustion risin y from p e v vthe combustion chamber pass up 'through Aa central flue, are'contined'thereto'and'are restricted to contact with avery small Aportion Y V1.10 Ypair ofribs 17 and 1S, respectively,adapted` to mate Vwith and abut against' the cori'e spending opposed ribs of an adjacent loop.Y

columns and l the top header.

fil

An arrangement of this character serves not only to give a'maximum condensation area, but it induces a circulation offair inwardly from the sides of the radiator toward the vflue and gives a maximum lcold air contactwith the cond'e-nsationor heat transfer surfaces. The inward and upward flow of kcold air also seems to enhance the'necessary draft upward through the flue so that the proper draft and flow of airto the comj bustion chamber through .the vents l5r is maintained.

It is believed that the advantages, uses and functions of my invention as well as the simplicity thereof will have been ap,- preciated from they foregoing and it will also be appreciated' that the invention is susceptible of manyv other embodiments and embodiment in otherv types of radiator loop construction bearing little, if any, resemblance to those illustrated. I do not,there fore, desire to be limited exceptfby the spirit of the invention and the scope of the ap-v pended claims.

I claim: f,

yl. In a radiator of the character described, a loop comprising columns, a header con,- n'ecting said columns, means providing a portion ofa combustion chamber below said header', a laterally projecting rib secured to said loop on one side thereof andbounding. the sides and the bottom ofthe combustion chamber, and an rinwardly and upwardly directing rib secured tosaid loop and liaving a portion spacedaboveA the first said rib.

2. In a radiator of the character described, a loopcomprising columns, a header connecting-'said columns, means providing va portion of a combustion chamber belowsaid header, a laterally projecting rib on one side of said loop and extending downwardly along said means from a place adjacent theY top of thecombustion chamber on each` side and across the bottom thereof, and a second laterally projecting rib on the same side of the'loop, said second rib having a portion spaced from and above the top of one end portion of the first said rib and extending generally diagonally upward and inward toward the center line of the loop.

In a radiator ofthe character described, a loop comprising` columns, a vheader vconnecting said columns, Vmeans providing a. portion of a combustion chamber below said header, a laterally projecting rib on one side of said loop n and extending ydownwardly along said means from a. place adjacent the top of the combustion chamber on each side and across the bottom thereof, a second laterally projecting rib on the same side of the loop, said second rib having a portion spaced from and above the top of one end' portion of the first said rib and extending generally diagonally vupward and inward toward the center line of the loop, anda third laterally projecting rib on'thesame sidel of. theloop,

said thirdrib having aportion spaced from and above the top ofV a portion of the other end' of the first said rib and extending generally 'diagonally upward and inward toward CCARNAHAM 

